Saw-swaging device



(No Model) 2 Sheets-Sheet 1. H. WILLIAMSON.

SAW SWAGING DEVICE. No. 325,467. Patented Sept.-]., 1885.

WITNESSES WXWW ATTORNEYS.

' 2 Sheets-Sheet 2.

(fie Model.) I H. WILLIAMSON.

, SAW SWAGING DEVICE. No. 325,467. Patented Sept. 1, 1885.

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UNITED STATES PATENT FFICE.

HENRY \VILLIAMSON, OF BAY CITY, MICHIGAN.

SAW-SWAGiNG DEVICE.

EE'PECIEICATION forming part of Letters Patent No, 325,467, dated September 1, 1885.

Application filed December 4, 1884. (No mtdelJ To all whom it may concern.-

Be it known that I, HENRY WVILLTAMsoN, of Bay City, in the county of Bay and State of Michigan, have inventeda new and Improved 5 Saw-Swaging Machine, of which the following is a full, clear, and exact description.

The object of my invention is to provide a new and improved saw-swage which is simple in construction, light, strong, and durable, and which can be used on gang or circular saws.

The invention consists in the combination, with a box, of a device for gripping the sawteeth, and a shaft on which a die is formed for swaging the teeth.

tails and combinations of the same, as will be fully set forth hereinafter.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is aside view of my improved sawswaging machine. Fig.2 is a longitudinal sectional View of the same. Fig. 3 is a plan View of the same, a part beinghroken away. Fig. 4 is a rear view of the same, parts being broken away.

In a box, A, a spindle, B, is arranged to slide transversely, and is provided at one end with a downwardly-projecting jaw, C, andhas its opposite end screw-threaded, and on the said screw-threaded end a nut, D, is mounted, provided with a crank-handle, E, and with an annular groove, E, into which a clip, I, on the box projects to permit the nut to revolve, but to prevent its movement toward and from the side of the box.

The jaw C is provided on its inner side with a raised,toothed,or serrated part, a, which is opposite a toothed and serrated part, b, on the box.

Directly in front of the part b a shaft, F, is journaled transversely in the box, and is provided on one end with a crank-handle, G,which is on the opposite side of the box to the handle E.

On the shaftF a die, H, is formed by cutting a segmental groove in the shaft, the bottom 50 of the groove beingmade convex transversely. A wedgeshaped die, K, is held loosely above the shaft F, and on the die K a wedge, L,

The invention also consists in parts and derests, which can be adjusted by a screw, M, passed through a piece, N, on the box.

An arm, 0, projects from the front of the box, and is provided with aseries of apertures, 1?, through one of which ascrew, Q, ispassed, which is also passed through a support, R, placed against the arm 0, and having its lower end forked to adapt it to rest upon the sawteeth.

An angular arni,S,is held on the top of the box, and is provided in the outer edge of its outer shank with a notch, m, for receiving a spring, a, on the handle G. The arm Sis pro vided with a series of apertures, a, for adjusting the arms S on the box.

The operation isas follows: The instrument is placed on the saw in such amanner thatthe wedge K rests upon the tooth to be swaged, and the support R rests upon the next tooth. The tooth to be swaged is then gripped firmly by turning the nut D, whereby the jaw C 1s pressed against the tooth, which in turn is pressed against the side of the box A. The nut D is turned by means of the handle E, and by means of the clip I is prevented from moving lengthwise on the screw. The support R can be adjusted on the arm 0 a greater or less distance from the box A, according to the distance the teeth of the saw are spaced. The handle G is then swung either forward or back, and thereby the die H is forced against the bottom of the point of the tooth, the top of which is forced against the bottom of the wed geshaped die K, and is thus swag-ed. If the tooth is to be swaged slightly the handle G is swung in the direction from the free end of the arm 0, and if the tooth is to be swaged considerably the handle G is swung toward the free end of the arm 0.

The handle G is held at rest by engaging the spring a in the notch m of the plate S.

The plate S can beheld in different positions on the box A. The die K can be adjusted as may be required by the screw M.

Circular or gang saws can be swaged as much as may be desired by means of the above-dc scribed apparatus.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In asaw-swagc, the combination,with the box A, of a saw-tooth-gripping device, the flat die K, wedge L, and shaft F, provided with a segmental groove forming a die, substantially as herein shown and described.

2. In a saw-swage, the combination,with the 5 box A, of a sawtooth-gripping device, the fiat die K, the wedge L, and the shaft F, on which a die is formed, substantially as herein shown and described.

3. In a saw-swage, the combination,with the 10 box A,of the shaft F,on which adie is formed,

the sliding spindle 13, having one end screwthreaded, and a jaw, C, secured on the opposite end, and the nut D, held to the box and provided with a handle, substantially as here- I 5 in shown and described.

HENRY WILLIAMSON.

'Witnesses:

W. G. BEARD, W. A. PETTAPIECE. 

